mta2mbh

XSLT v1.0 application to convert MARC Title Authority records into MARC "Bib Hub" Work descriptions.

Contents

• Introduction
• Examples
• Dependencies
• Usage
  • Stylesheet parameters
• Specifications
• Testing
• Design notes
• License

Introduction

mta2mbh is an XSLT v1.0 stylesheet that converts name-title and title authority records encoded as MARCXML (either a single record or a MARC collection) into "Bib Hub" Work descriptions -- sparse MARC bibliographic records built from the authority records. This is an experimental data conversion project which creates MARC records that contain fields, subfields, and indicator values not currently defined in the MARC bibliographic format. In addition, treatment of series treatment fields (from the authority record 64X fields) is under review and may change in future versions of this stylesheet.

For more background about the genesis of this conversion, see the Report on examination of MARC Title Authorities. In addition to providing more detailed description behind the motives for this experimental data conversion, it details the (relatively) few additions and changes needed to the MARC Bibliographic format to further this idea.

Examples

MARC "Bib Hub" descriptions can be viewed at ID.LOC.GOV. A link can be found at the bottom of all Title or NameTitle pages such as this one.

There is also a comparison service that facilitates side-by-side comparison.

Dependencies

• date:date-time() or fn:current-dateTime() -- to create a timestamp for the generated MARC 884 data field. If no pConversionDatestamp parameter is provided and neither function is available, the 884 $g will not be generated (see Stylesheet parameters below).

• exsl:node-set() -- to allow for sorting the MARC fields in the output MARC record in tag order. If this function is not available, the fields in the record will not be in tag order.

Usage

xsltproc mta2mbh.xsl test/data/mta.xml

Stylesheet parameters

• pConversionDatestamp -- a static datestamp in the form YYYYMMDD for inclusion in a generated MARC 884 $g. If this parameter is not provided, a datestamp will be generated using date:date-time() or fn:current-dateTime() (see Dependencies above).

• pConversionAgency -- the MARC code of the agency performing the conversion, for inclusion in a generated MARC 884 $q. Defaults to "DLC"

• pConversionURI -- a URI for the conversion program. Defaults to the Github repository for this application (https://github.com/lcnetdev/mta2mbh).

Different XSLT processors have different syntaxes for passing parameters. For xsltproc, the syntax is:

xsltproc --stringparam pConversionAgency HCO mta2mbh.xsl test/data/mta.xml

Specifications

The specifications for the conversion are in the spec directory.

Testing

The test suite for the application is in the test directory, with test data in the test/data directory.

The tests are written for the XSpec testing framework, a behavior driven development testing framework for XSLT and XQuery. To run the tests, you must install the Saxon XSLT and XQuery processor as well as XSpec. Installation instructions are available on the XSpec wiki.

Once you have XSpec installed, you can run the test suite with the command (for Mac OS or Linux):

xspec.sh test/mta2mbh.xspec

Test reports will be output in the test/xspec directory.

Design notes

mta2mbh is designed as a single-stylesheet XSLT application.

• For best performance, mta2mbh has a "push" design that deals with each source MARC field only once as much as possible.

• The MARC fields are assembled as a result tree fragment in an XSLT variable, so that they can be sorted in tag order for output.

License

As a work of the United States government, this project is in the public domain within the United States.

Additionally, we waive copyright and related rights in the work worldwide through the CC0 1.0 Universal public domain dedication.

Legal Code (read the full text).

You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.